Nutrient uptake Plant Nutrition 5 Plant nutrition 4 Soil Chemistry and Mineralogy 4 Soil Fertility 4 Soil fertility 4 Soil organic matter 4 Nutrient availability 3 Nutrient deficiencies 3 Phosphorus 3 Plant Physiology and Biochemistry 3 Soil Biology 3 Agroforestry 2 Agroforestry and Multipurpose Trees: Community, Farm and Social Forestry 2 Calcium 2 Chemical composition 2 Crop production 2 Crop quality 2 Crops 2 Fertilizers and other Amendments 2 Iron 2 Manganese 2 Models 2 Mycorrhizas 2 Nitrogen 2 Nitrogen fertilizers 2 Nutrient transport 2 Plant Composition 2 Plant Production 2 Plant composition 2